30 Degree Roof Pitch

What degree angle is a 12 12 pitch roof.

30 degree roof pitch. Roof angles and rafter plumb cuts. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. Visit this page on your phone to directly measure pitch and angles. With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch.

Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. Drag sliders to animate the results and diagram. To convert between american roofing ratios and pitch degrees follow these steps.

Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree. Enter any pitch or fraction of pitch to find angle. Enter any angle or fraction of angle to find pitch. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.

Find the inverse tangent of the pitch to find the angle in degrees. Steeper slopes increase the sail effect that makes them susceptible to wind. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. But with the use of a roof pitch in degrees converter you will be able to get the correct measurement.

A 12 12 pitch roof has a pitch angle of 45. Set bevel gauge directly from phone or tablet screen. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. The triangle diagram will be re drawn to scale with all dimensions marked.

Select inches to enter decimal inches or millimeters for metric. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. The table below shows common roof pitches and the equivalent grade degrees and radians for each.

Divide the first part of the ratio by 12 to work out the pitch. Lower slopes don t handle wind driven rain as well. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.